Great Lakes Advisors’s MasTec MTZ Stock Holding History

Great Lakes Advisors’s Portfolio MTZ Stock Details MTZ Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$7.63M	Sell	18,339 -27,577	-60%	-$10.5M	0.06%	175
2026 Q1	$14.8M	Sell	45,916 -7,191	-14%	-$1.95M	0.12%	126
2025 Q4	$11.5M	Sell	53,107 -14,962	-22%	-$3.14M	0.09%	146
2025 Q3	$14.5M	Sell	68,069 -53,006	-44%	-$9.71M	0.12%	137
2025 Q2	$20.6M	Buy	121,075 +16,469	+16%	+$2.37M	0.17%	122
2025 Q1	$12.2M	Sell	104,606 -79	-0.1%	-$10.7K	0.11%	166
2024 Q4	$14.3M	Sell	104,685 -2,922	-3%	-$392K	0.12%	165
2024 Q3	$13.2M	Buy	+107,607	New	+$11.7M	0.11%	171

Other funds holding MTZ

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Peconic Partners New York $8.04B AUM 107.18% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

HCC

Hill City Capital Boston, Massachusetts $4.28B AUM 80.76% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

LPC

Lone Pine Capital Greenwich, Connecticut $16.4B AUM 99.7% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

Great Lakes Advisors's MTZ Position: Q2 2026 in Review

Great Lakes Advisors reduced its MasTec (MTZ) stake by 60% in Q2 2026, selling an estimated $10.5M and leaving 18,339 shares worth $7.63M. The position accounts for 0.06% of the portfolio, ranked #175.

Great Lakes Advisors first reported a position in MTZ in Q3 2024 and has held it in 8 quarters since. The position peaked at $20.6M in Q2 2025. 912 funds tracked by Wall St. Rank hold MTZ as of Q2 2026.

Great Lakes Advisors held 18,339 shares of MasTec worth $7.63M as of Q2 2026.
Great Lakes Advisors sold 27,577 MasTec shares in Q2 2026, an estimated $10.5M.
MasTec made up 0.06% of Great Lakes Advisors's portfolio in Q2 2026, its #175 holding.
Great Lakes Advisors first reported a position in MasTec in Q3 2024 and has held it in 8 quarters since.
Great Lakes Advisors's MasTec position peaked at $20.6M in Q2 2025.
912 funds tracked by Wall St. Rank held MasTec as of Q2 2026.

Based on Great Lakes Advisors's 13F filing for Q2 2026, filed 10 Aug 2026.